BJB Enterprises TC-1650-AB

• Molds for casting polyurethane, epoxy, polyester, and other materials
• Vacuum form molds
• Wax casting molds
• Compression molds

MOLD CONSTRUCTION:

The composites approach to mold construction uses TC-1650 A/B as a binder forSC-125 Aluminum Granules. This mixture is cast behind a high temperature surface coat, TC-1611 A/B or TC-1618 A/B. This combination provides several benefits. The high temperature surface coat provides exceptional durability while the aluminum granule addition to the TC-1650 A/B vastly increases heat conductivity and reduces shrinkage. Using this method will also decrease cost. Generally, the SC-125 Aluminum Granule is added at the rate of 60-80 parts by weight to 100 parts by weight mixed resin and hardener. Larger amounts of aluminum granules are added when making vacuum form molds, casting molds, foam molds and other low pressure compression type molds.

POST CURING:

All physical property results are based upon post-curing this system. The following procedure provides the best results. Allow the casting to cure at ambient temperature for 8-12 hours. Then cure as follows:

75F (24C) for 12 to 20 Hours

150F (66C) for 1.5 to 2Hours

250F (121C) for 2 Hours

350F (177C) for 1 Hour

Turn off oven and allow to cool in the oven. This procedure provides further stabilization and eliminates possible thermal shocks for cavity tools that are temporarily clamped together for curing purposes.